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Apart from DDT, what else is known to undergo biological magnification in aquatic food chain?

A cloning vector must:

In north India, a sugarcane farmer would be best advised to grow:

Lactic Acid Bacteria can check the growth of disease causing:

Identify the option where all columns are correctly matched:

In breeding a new genetic variety of a crop, the immediate usual requirement after the superior recombinant has been selected is:
1. to create a pure line
2. evaluation in research fields
3. testing in farmer’s fields
4. applying for a patent

Interferon alpha, used in the treatment of certain cancers, acts as:
1. Immunosuppressant
2. Biological response modifiers
3. Mitochondrial anti-oxidants
4. Monoclonal antibodies

The microenvironment for the development and maturation of T lymphocytes is provided by:
I. Bone marrow
II. Thymus
III. Spleen

Plasmid pUC18 carries lacZ gene that confers the host cells to convert white X-gal into blue indole. A gene is inserted within the lacZ gene of the plasmid. Bacterial cells transformed with this rDNA, if provided with X-gal in the medium, will produce:

The underlying basis of the Polymerase Chain Reaction is:

Modern catalytic converters in automobiles are capable of:

1. Only I
2. Only II
3. Both I and II
4. Neither I nor II

Sacred groves, found in Khasi and Jaintia Hills, are located in the Indian state of:

David Tilman conducted long-term ecosystem experiments using outdoor plots. His findings include:

The primary objective of the secondary treatment of sewage water is:

Fleming first observed the antibiotic properties of the mould that makes penicillin. But the credit to develop it into a useful treatment goes to:

The ‘eyes’ [round holes] seen in Swiss cheese are due to:

Cyclosporin A is used in people who have received an organ graft because it primarily lowers the activity of:

DNA fragments digested by restriction endonucleases separate on agar gel electrophoresis according to their size because:

A hybridization probe used in molecular diagnosis is commonly tagged with a radioactive isotope to allow for its visualization. A common such radioactive isotope that can be used is:

The main challenge for production of insulin using rDNA techniques was:

The abuse of which of the following is least likely to cause hallucinations?

Metastasis shown by malignant tumors:

After a few years of being diagnosed with HIV infection, a person develops tuberculosis, toxoplasmosis, diarrhea, and significant weight loss. This is most likely due to:
1. A cytokine storm in the body
2. A decrease in B lymphocytes count
3. A decrease in T helper cells count
4. A side effect of anti-retroviral therapy given

Regarding competence for bacterial cell transformation:

1. Only I is correct.
2. Only II is correct.
3. Both I and II are correct.
4. Both I and II are incorrect.

Agrobacterium mediation is least likely to be successful when used to create transgenic:

A mean annual temperature of 20 to 25⁰C and a mean annual precipitation of 150 to 410 cm are characteristics of the biome:
1. Tropical forest
2. Coniferous forest
3. Grassland
4. Temperate forest

In the Verhulst-Pearl logistic model of population growth, the determinant which increases as the population increases towards the carrying capacity will be:

In plants the most common morphological defense against herbivory is:

The distribution of a species is found to expand dramatically when the competitive superior species is removed from the area. This is called as:

Two intermediate hosts used by human liver fluke to complete its life cycle are:

Symptoms of allergy in a person can be reduced with the help of the following except:

In the human body, the malaria parasite first multiplies in:
1. RBC
2. Hepatocytes
3. Hepatic sinusoids
4. Lymphocytes in secondary lymphoid organs

Non-specific response to microbes that enter the human body involves the response of all the following except:

Recombinant vaccine used to prevent Hepatitis B contains:
1. killed hepatitis B virus
2. live attenuated hepatitis B virus
3. antigenic polypeptide of hepatitis B virus
4. messenger RNA of yeast

A person has a contaminated wound after a road traffic accident. He has not received tetanus toxoid in his life and was given tetanus immunoglobulin. The type of immunity that will be conferred to this person will be:
1. passive natural immunity.
2. active natural immunity.
3. active artificial immunity.
4. passive artificial immunity.

Fecal-oral route is not involved in the transmission of:

Provided it is carried out in an environmentally friendly manner, the only solution for the treatment of e-waste is:
1. Recycling
2. Incineration
3. Sanitary landfills
4. Burying deep in earth

What is common to Lates niloticus, Lantana Camara, and Parthenium hysterophorus?
1. They all have caused the extinction of a large number of indigenous species in India.
2. They have been extinct in the wild in the past 200 years.
3. Transgenic varieties of these organisms are used to harvest therapeutic products.
4. They are all examples of alien species that have become invasive in some environments where they were introduced.

Exploring molecular, genetic, and species-level diversity for products of economic importance unethically appropriated and without fair compensation to indigenous people is called:

Human interference in the phosphorus cycle by overuse or careless use of phosphorus fertilizers can most commonly lead to:
1. increased soil salinity
2. accelerated eutrophication of water bodies
3. desertification
4. soil erosion and nutrient depletion

An example of chemosynthetic based ecosystems where primary productivity is fuelled by chemical compounds as energy sources instead of light will be:
1. Benthic region in an ocean
2. Permafrost
3. Hydrothermal vents
4. Mangroves

Which of the following ‘flows’ through an ecosystem and does not ‘cycle’?

Transgenic mice are being used to test the safety of polio vaccine. They could replace the use of:

In animal breeding, an outcross is performed for all the following except:
1. Creating pure lines
2. Overcoming inbreeding depression
3. Increasing milk production
4. Increasing growth rate in beef cattle

A plant disease not caused by a fungal pathogen will be:

Atlas 66 is:

Microorganism used as source of single cell protein have many advantages over the traditional methods for producing proteins for food which includes all the following except:
1. Microorganisms have a much higher growth rate
2. Microorganisms usually have a much higher protein content of 30–70% in the dry mass than vegetables or grains.
3. Some microorganisms can build vitamins and nutrients which eukaryotic organisms such as plants cannot produce.
4. Fast growing microorganisms such as bacteria and yeast have a high concentration of nucleic acid, notably RNA.

Consider the given two statements:

1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct but II is incorrect.
4. I is incorrect but II is correct.

On the land, almost all primary production is performed by:

Consider the given two statements:

If we put a price tag on nature’s life-support services, about 50 % of the total cost will be accounted for by:
1. Recreation and nutrient cycling
2. Soil formation
3. Climate regulation
4. Habitat for wildlife

Secondary productivity in an ecosystem can be defined as:

Golden rice was created by:

A good candidate for a possible gene therapy treatment will include all the following diseases except:

Nematode [Meloidogyne incognita] specific genes were transferred to tobacco plant using:

Corn borer can be controlled by the proteins encoded by Bacillus thuringiensis gene:

The first step to achieve somatic hybridization in plants will be:

If you want to regenerate virus-free plants in micropropagation, the best explants to choose will be:

Resistance to the yellow mosaic virus:

Kalyan Sona and Sonalika are:
1. semi-dwarf varieties of wheat developed in India
2. semi-dwarf varieties of wheat introduced in India
3. semi-dwarf varieties of rice developed in India
4. semi-dwarf varieties of rice introduced in India

Which of the following is not an example of a marine fish eaten in India?

Biodiversity hotspots are characterized by:
1. High number of endemic species and low threat of extinction
2. Low number of endemic species and low threat of extinction
3. Low number of endemic species and high threat of extinction
4. High number of endemic species and high threat of extinction

Consider the given two statements:

1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct but II is incorrect.
4. I is incorrect but II is correct.

Ex-situ conservation will be most applicable to the animals placed in which of the following IUCN categories?
1. Vulnerable
2. Endangered
3. Threatened
4. Extinct in wild/Critically endangered

Given below are the characteristics used in explaining higher biodiversity in tropics. Identify the one/s that is/are correctly matched:

On a logarithmic scale, the species-area relationship turns out to be a:

Amongst the vertebrates, the maximum species number is found in:

Match each item in Column I with one in column II and select the correct answer from the codes given:

Codes:

Of the ultraviolet radiation that reaches the Earth's surface, more than 95% is:
1. UV A
2. UV B
3. UV C
4. UV radiation reaching Earth has an equal percentage of UV A, UV B, and UV C

El Nino, characterized by the warming of surface temperatures in the Pacific Ocean, is associated with:

Since the pre-industrial period, global average land temperatures have increased almost twice as fast as global average surface temperatures. This may primarily be due to:

EcoSan is a practical, hygienic, efficient, and cost-effective solution for the disposal of:
1. Radioactive wastes
2. Solid wastes
3. Plastic wastes
4. Human wastes

A therapeutic product that is used to prevent the risk of coronary artery disease by its effect on one of the risk factors is obtained from the microbe:

Commercially citric acid can be produced with the help of:

Baculoviruses can play an important role in overall Integrated Pest Management in an ecologically sensitive area because:

Important biofertilizers in paddy fields are:
1. Cyanobacteria
2. Rhizobia
3. Frankia
4. Nitrobacter and Nitrosomanas

Long-term steroid abuse in human males does not cause a decrease in:

In the RT-PCR test used for diagnosing Covid-19, a higher cycle threshold [Ct] value indicates:
1. a higher viral load in the sample
2. a lower viral load in the sample
3. time after which vaccine needs to be given
4. the effectiveness of the antiviral medicines

Downstream processing involves all the following except:

The name Genetic Engineering Approval Committee [GEAC] has been changed to:

An endoparasite in the human alimentary canal is expected to possess:

An apex predator feeding on five different species is experimentally removed. The expected effect on the area will be:

Abingdon tortoise got extinct from the Galapagos Islands because of:

A country is experiencing a mass exodus of its population due to an ongoing civil war. The growth rate of its population in the present scenario will primarily be decided by:

Each trophic level has a certain mass of living material at a particular time called as the:
1. Standing crop
2. Standing state
3. Stratification
4. Ecosystem production

Suppose in an area, the energy present in total incident sunlight falling on primary producers is 10,00,000 J and about 10,000 J is converted by them into biomass. What percent of PAR have the primary producers been able to convert?

In primary ecological succession in water, the pioneers are:
1. Mosses
2. Lichens
3. Phytoplankton
4. Free floating hydrophytes

Water [Prevention and Control of Pollution] Act was passed by the Government of India in:

Noted environmentalist Sunder Lal Bahuguna died on 21st May 2021. His name is associated with:
1. Narmada Bachao movement
2. Bishnoi movement
3. Chipko movement
4. Silent valley movement

ELISA is based on the principle of: